Справочник Пользователя для HP proliant bl e-class

 

After connecting more 
than one port to another 
switch or destination 
device, the port activity 
LEDs continuously 
indicate activity. 

Since there are multiple links across 
this device and the destination device, 
they form loops, which cause 
broadcast storms. 

From the Configure Spanning Tree settings 
screen, enable STP at switch level. From the 
Port Spanning Tree settings screen, enable 
STP at port level, if you want multiple links. 
Make sure that the Bypass setting is disabled. 
This will avoid loops and maintain standby 
links for resilience in case the primary links go 
down. 

While configuring VLANs, 
you cannot enable a port 
in multiple VLANs. 

A port can be part of only one VLAN 
unless the port is a tagged port. 

Make sure that your VLANs are 802.1Q 
VLANs and enable the port as a tagged port 
from the 802.1Q Static VLAN Settings 
screen on console interface, or the VLAN 
settings screen on Web-based interface. 

After assigning a port to 
multiple 802.1Q VLANs by 
configuring it as tagged 
port, you check the PVID. 
It is equal to the first 
VLAN ID. 

For port-based VLANs, ports belong 
to only one VLAN and only one PVID 
can be assigned.  Port-based VLANs 
can be extended to other switches by 
cross connecting ports that have the 
same PVID (the same Port based 
VLAN). 

By default, all the ports have PVID 1. The 
switch assigns to the port a PVID that is equal 
to the VLAN ID of the first VLAN that the port 
was enabled in. To manually configure a Port 
VLAN, refer to “Configuring a Port VLAN” in 
the management interface reference guides. 

Changing the first 
XConnect port settings 
changes the next 
XConnect port settings. 
But changes to the second 
XConnect port settings 
cannot be applied or 
saved. 

By default, XConnect ports are 
bundled into a port trunk. 

Since they are bundled into a trunk, the 
settings of the first port are referenced and 
applied to the reset of the ports. So in a trunk, 
only the first port (reference port) is 
configurable and defines the characteristics of 
the other ports in the trunk.  

While assigning the ports 
to VLANs, the interconnect 
switch does not let the 
user enable two adjacent 
ports into two different 
VLANs.  

The ports could be two adjacent ports 
that are bundled in a port trunk.  

Two ports that are assigned to a port trunk 
cannot be assigned to two different VLANs. 
Either break the trunk to assign it two different 
VLANs or assign the ports to one VLAN. 

After forcing the speed, 
duplex, and flow control on 
the port, the link does not 
come up and transfer data 
properly. 

Both sides need to be forced to the 
same settings. In case of auto-
negotiation, both sides will negotiate 
and match the setting to make the 
correct link.  

• 

From the Configure Ports screen, make 
sure the ports are forced to the same 
setting as the setting on the other end of 
the link.  

• 

Use a crossover cable in case of forced 
10/100 speeds.